Window construction.



G. H. FORSYTH.

WINDOW GONSTRUGTION.

APPLICATION FILED PEB. 6, 1909, 1,086,320 Patented Feb, 3, 1914.

provide a simple, easily operated and fitting window; and the constructional fea# GnonGE n. roRsYTH, oF cirrcaeo, ILLINOIS.

WINDOW CONSTRUCTION.

Specification oi' Letters Patent.

Patented Feb. 3, 1914.

Application led February 6, 1909. Serial No. l176,470.

tion.

This invention relates to window constructions, and more especially windows of that type wherein the sash frames are made of hollow bent or folded sheet metal, such as are coming into use in connection with rail-l way cars and other situations wherel a light, strong and fireproof construction 1s desired. The general object of the lnvention' is .to

tures of the invention will be readily understood when considered in connection with the accompanying drawing, in which,-

Figure 1 is a vertical transverse section through the upper portion of the window,

showing the two glazed sash. Fig. 2 is a similar section through the lower .portion of the window and sill.` Fig. 3 is a side elevation, broken out, of one side of one sashy member and its shoe. Fi 4 is a horizontal section, enlarged, throng one side of the window, showin twin sash members, and their manner and; means of engagement with the guide of the frame. v

Referring tothe drawing, 1 (Fig. 4) substantially designates an upright post of and 2 a covering or finish- I-beam format-ion,

ing strip applied to the side thereof which is adjacent to the window opening. 3 designates a portion of an interior finishing strip that covers the post 1 between adjacent winow openings. Applied'to the strips 2 and 3 is a corrugated sheet metal strip designated as an entirety by 4, which is suitably grooved longitudinally to form grooves or channels 5, 6 and 7, for a air of outer and inner sash members 8 ang 9, respectively, and a curtain fixture indicated at 10. It will be observed by reference to the enlarged view, Fig.4, that the guide-grooves 5 and 6 have straight and oblique guide walls 5f and 5" and 6a and 6b, the purpose lof the oblique walls being to automatically force the opposite sides ofthe sash members into snug engagement with the straight walls to secure a tight t.

The st-i'les and lower transverse bar of each sash frame are formed of shleet metal suitably bent to resent a hollow structure, and are provided) with protuberant ribs on their inner edges designed to form an attachment or anchorage' for elastic metal glazing strips or clamps, this latter forming one of the features of the invention. Referring to the lower transverse bar of the sash 8, as shown in Fig. 2, it will be seen that this comprises a hollow sheet'metal member 11, the two margins of which are bent inwardly on the inner edge of the bar, as Shown at 11a and are then flared outwardly, as shown at 1lb, producing a dovetail formation, said outwardly flared edges being secured together by a correspondingly bent ca 12, forming a protuberant rib. Embracing this latter is a hollow metal clamp 1 3, open on its inner edge to receive the lower margin of the glass under spring tension. At intervals spring tongues 13a are punched or struck up out of the top wall of the clamp 13 to form a spring cushion for the edge of the glass. The lower bar 14 of the sash member 9 illustrates a slightly modified formation, wherein the inner wall of the bar is continuous, being formed`with the protuberant rib 14a, and the margins of the metal being overlapped in the bottom wall of the member, as shown at 14;". To the protuberant rib 14 is applied the same elastic metal clamp 13 for holding the lower edge of the glazing.

' The upper transverse bar is so formed as to itself constitute an elastic glass-holding means. The bar of the sash 8 has a pair of sheet metal sides 15 swung inwardly at their inner margins, an inner clamp 'for the glass, their outer edges4 being provided with rentrant channels 16 that are engaged byv inwardly extending ribs v17l ofI an outer marginal cover or cap 18, said cap being bent back upon itself alongfits outer margins at 18a andhaving inwardly extending elastic margins 19 which grip and clamp the upper'marginal portion of the glass. In the form of the upper bar shown at the right in Fig. 1 in connection with the sash 9, the rentrant channels 20 and spring margins 21 are made integral-with the side walls 22 of thesash bar, and the `cap 23 has its margins bent back upon themselves at 23av and a marginal flange 24snugly fitting the channel 20, The purpose of the caps 18 and 20 is toprovide as shown at 15, to formv a removable closure for the up er end of 4,the sash frame,`rwher'eby the gazing may with the sash 8, is formed substantially as' the lower bar 11, except for the presence of a deep marginal channel 26 formed by folding the metal inwardly, thus producing a pair of opposed hollow side walls 27 and 28 into which is itted, at the corners ot .the sash frame, Lshaped connectors 29 of channel form in cross-section.' The'stile 30, shown in connection with the sash 9, is formed substantially like the stile 25.v yBetween the stile 2 5 and its guide-groove 5 is located ak sheet metal shoe, which is so bent as to provide parallel marginal portions 33 and 34 which engage the side walls of the channel 26 of the stile, a straight transverse wall 35 bent back upon itself along its margin 35a, an oblique wall 36, and an outer side wall 37 oi double thickness, integral with which latter are formed inwardly extending finger hooks 38 for use in withdrawing the sash and shoe from the frame when desired. Between the transverse wall 35 of the shoe and the bottom transverse wall of the channel 26 is interposed a bow-spring 3,9, normally tending to force said members apart and produce` a snug it of the shoe in the guide.

The shoe shown inconnection with the stile 30 is constructed on the same principle, although slightly dierently formed, having parallel walls 40 and 41 engaglng the side walls of the channel 31, an ob ue Wall 42 engaging the oblique wall 6b of t e channel, and an outer side wall 43 of double thickness, one margin of the shoe being bent transversely to form an abutment 44 for the leaf spring 45 whereby the shoe is forced into engagement with the guide. It will be noticed that the engagement of thejoblique walls of the shoes with the oblique walls of their respective guides roduces a wedging action tending to crow the outer sides of the stiles into engagement with the vertical walls of their respective guides.

The stile members are formedwith protuberant ribs on their inner edges for theattachment of the glass-holdin strips or clamps 46 and 47 which are simi ar in iunc tion to the clamps 13. ln connection with the sash 8 l have shown the same formation as in connection with the lower bar (Fig. 2). ln connection with the sash 9, I have shown a slightly modied holding means, the connecting strip 48 having integral inwardly turned folds 49`embracing the outi wardly bent margins of the stile and being further provided with downwardly and outwardly bent margins 5() beneath which hook the lower inwardly turned margins 51.

of the clamp 47. Spring glass cushioning tongues 48a are struck up from `the strip 48, similar in function to'the tongues 132 The inner side of the window casingis provided with a readily detachable fnlshing board or strip 52 (Fig. 1) to which is secured the housin 53 of the curtain fixture roller 54, said finishing strip 52 lying opposite the upper ends of the sash members 8 and 9. By removing this strip, and compressing the shoes inwardly toward the stiles by means .of the finger hooks 38 or otherwise, the sash members can readily .be removed from their guides, which operation 1s an advantageous one where the car is to be converted from winter to summer service.

It will be noticed that the glass is secured wholly by elastic clamps which, in the case of the upper cross-bars, are integral with 4the latter and, inthe case of thel stiles and lower bars, are so formed as to be capable of being readily mounted in place on the marginal ribs. Thisadords anexc-eedingly simple and easy manner and means of securing the glass without necessity of screws er` other fastening devices; while the glass, being held on all sides under spring tension, is roof against rattling. The provision of s oes between the sash stiles and their guides which engage said stiles both on the inner and outer sides of their side walls, is also of advantage/in holding the sash members securely against lateral yield relative to their guides, and in making an extra tight sash. The ends of the shoesare bent `transversely to overlap the ends of the sash at the corners of the latter, as shown at 37, which both causes the shoes to move with the sashand holds the cap members in place.

l claim:

1. The combination with a sash frame member having a protuberant rib on its inner margin, of a glass-holding strip mounted upon and embracing the rib and having tongues outstanding 1n the plane. of the rib to support the edge of the glass, said strip elastically engaging the glass on both sides of the same, substantially as described.

2. The combination with a sash frame member having an integral. protuberant rib of dovet-ail form in cross-section on its in said rib whereby to-eect a connection between said elements, substantially as described.

4. The combinationl of a sash frame member, and a glass holding strip having elastic inwardly bent marginal portions adapted to grip the glass onl both slides thereof,y the sash frame member and the glass holding strip having a dove-tail connection one with the other, substantially as described.

5. The combination of asash frame member, anda glass holding strip mounted thereon and hav-ing elastic inwardly bent portions adapted to grip the glass on both sides thereof,`the sash member and the glass holding strip having coacting wedge surfaces'tending when assembled to draw thek elements into a snug engagement, substantially as described.

GEORGE H. FORSYTH.

Witnesses;

WALTER M. FULLER, MA'rrm B. Buss. 

